MARINE REPORT / 72 HOURS

Surin Islands Snorkel Report Today

Thailand · Updated Sun 12:48 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 12:48 (+07)

Surin Islands has a usable snorkeling window around Sun 15:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.9/10

Sun 14:00 (+07)

Later today

Good · 6.6/10

Sun 15:00 (+07)

Next three days

Good · 6.7/10

Mon 15:00 (+07)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 6.6/10

Best time: Sun 15:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Sun 15:00 (Good). Peak afternoon wind is about 2.8 m/s.

Email me when it is good

Sunrise

06:16

Sunset

18:10

Water

30.7°C

Max air

28.0°C

Sky

Cloudy

99% cloud

Good model window in the next 72 hours

Next good model window: Sun 15:00–18:00 (33% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Sea temperature

Monday

✅ Good conditions

Main blocker: Tide/current

Tuesday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 15:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (39 hours)
  • Darkness (36 hours)
  • Tide/current (31 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 31/100

Low peak drift risk around Sun 17:00.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Mon 02:00

Mon 02:00, Mon 16:00, Tue 04:00, Tue 18:00, Wed 06:00

Nearby alternatives in Thailand

Similan Islands

89 km away

✅ Good

Railay

189 km away

✅ Good

Koh Phi Phi

212 km away

✅ Good

Koh Tao

229 km away

✅ Good

Advanced forecast data

Viewing historical data

Sun 14:00 – Wed 14:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.4 around Mon 11:00; 5 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 1.18m to 1.66m).

Wind is at or below 5.4m/s in 17/24 sampled hours (range 2.57 to 8.2m/s).

Tides range from 0.22m to 0.91m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
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Fair ⚠️ Fair
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Fair ⚠️ Fair
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Fair ⚠️ Fair
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Poor ❌ Limited
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Poor ❌ Limited
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Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sun 14:00 1.66 · high 6.56 · high 28.70 · good Poor
Sun 15:00 1.64 · high 8.20 · high 28.70 · good Poor
Sun 16:00 1.64 · high 6.96 · high 28.70 · good Poor
Sun 17:00 1.62 · high 7.50 · high 28.70 · good Poor
Sun 18:00 1.52 · high 7.14 · high 28.60 · good Poor
Sun 19:00 1.52 · high 6.51 · high 28.60 · good Poor
Sun 20:00 1.50 · high 5.18 · good 28.60 · good Poor
Sun 21:00 1.48 · high 5.26 · good 28.60 · good Poor
Sun 22:00 1.36 · high 3.81 · good 28.60 · good Poor
Sun 23:00 1.34 · high 4.04 · good 28.60 · good Poor
Mon 00:00 1.34 · high 3.19 · good 28.60 · good Poor
Mon 01:00 1.32 · high 2.82 · good 28.60 · good Poor
Mon 02:00 1.30 · high 3.05 · good 28.60 · good Poor
Mon 03:00 1.30 · high 2.99 · good 28.60 · good Poor
Mon 04:00 1.28 · high 2.86 · good 28.60 · good Poor
Mon 05:00 1.28 · high 2.57 · good 28.60 · good Poor
Mon 06:00 1.26 · high 2.86 · good 28.60 · good Poor
Mon 07:00 1.26 · high 5.05 · good 28.60 · good Fair
Mon 08:00 1.26 · high 5.65 · high 28.70 · good Poor
Mon 09:00 1.24 · high 4.78 · good 28.70 · good Fair
Mon 10:00 1.24 · high 4.85 · good 28.80 · good Fair
Mon 11:00 1.22 · high 4.66 · good 28.80 · good Fair
Mon 12:00 1.20 · high 4.10 · good 28.90 · good Fair
Mon 13:00 1.18 · high 3.40 · good 28.90 · good Poor
Mon 14:00 1.16 · high 3.20 · good 28.90 · good Poor
Mon 15:00 1.16 · high 1.45 · good 29.00 · good Fair
Mon 16:00 1.14 · high 1.38 · good 29.00 · good Fair
Mon 17:00 1.12 · high 1.48 · good 29.00 · good Fair
Mon 18:00 1.06 · high 2.00 · good 29.00 · good Fair
Mon 19:00 1.04 · high 0.86 · good 29.00 · good Poor
Mon 20:00 1.04 · high 2.84 · good 29.00 · good Poor
Mon 21:00 1.02 · high 1.58 · good 29.00 · good Poor
Mon 22:00 1.02 · high 1.77 · good 28.90 · good Poor
Mon 23:00 1.08 · high 3.18 · good 28.90 · good Poor
Tue 00:00 1.08 · high 3.01 · good 28.90 · good Poor
Tue 01:00 1.06 · high 3.00 · good 28.80 · good Poor
Tue 02:00 1.06 · high 3.81 · good 28.80 · good Poor
Tue 03:00 1.04 · high 2.89 · good 28.80 · good Poor
Tue 04:00 1.04 · high 3.31 · good 28.70 · good Poor
Tue 05:00 1.04 · high 3.52 · good 28.70 · good Poor
Tue 06:00 1.02 · high 2.77 · good 28.70 · good Poor
Tue 07:00 1.02 · high 2.85 · good 28.70 · good Fair
Tue 08:00 1.00 · high 2.01 · good 28.70 · good Fair
Tue 09:00 1.00 · high 2.86 · good 28.80 · good Fair
Tue 10:00 0.98 · high 2.16 · good 28.80 · good Fair
Tue 11:00 0.98 · high 2.64 · good 28.90 · good Fair
Tue 12:00 0.96 · high 2.52 · good 29.00 · good Fair
Tue 13:00 0.96 · high 2.61 · good 29.00 · good Fair
Tue 14:00 0.96 · high 3.03 · good 29.00 · good Poor
Tue 15:00 0.94 · high 3.40 · good 29.00 · good Fair
Tue 16:00 0.94 · high 3.44 · good 29.00 · good Fair
Tue 17:00 0.94 · high 3.93 · good 29.00 · good Fair
Tue 18:00 0.94 · high 3.64 · good 28.90 · good Fair
Tue 19:00 0.94 · high 3.78 · good 28.90 · good Poor
Tue 20:00 0.94 · high 5.86 · high 28.80 · good Poor
Tue 21:00 0.94 · high 3.45 · good 28.80 · good Poor
Tue 22:00 0.94 · high 2.30 · good 28.80 · good Poor
Tue 23:00 0.96 · high 4.76 · good 28.70 · good Poor
Wed 00:00 1.00 · high 4.01 · good 28.70 · good Poor
Wed 01:00 1.00 · high 3.73 · good 28.60 · good Poor
Wed 02:00 1.00 · high 4.75 · good 28.60 · good Poor
Wed 03:00 0.98 · high 2.69 · good 28.60 · good Poor
Wed 04:00 0.98 · high 1.76 · good 28.60 · good Poor
Wed 05:00 0.98 · high 3.24 · good 28.50 · good Poor
Wed 06:00 0.98 · high 3.40 · good 28.50 · good Poor
Wed 07:00 0.98 · high 4.00 · good 28.50 · good Poor
Wed 08:00 0.98 · high 5.12 · good 28.50 · good Poor
Wed 09:00 0.98 · high 4.38 · good 28.50 · good Poor
Wed 10:00 0.98 · high 5.22 · good 28.60 · good Poor
Wed 11:00 0.98 · high 5.91 · high 28.60 · good Poor
Wed 12:00 0.98 · high 4.99 · good 28.60 · good Poor
Wed 13:00 0.98 · high 6.00 · high 28.60 · good Poor